[modeleng] Re: Boiler blues
- From: Allen Messer <al_messer@xxxxxxxxx>
- To: modeleng@xxxxxxxxxxxxx
- Date: Mon, 12 Sep 2005 05:32:08 -0700 (PDT)
I agree with Peter. The big gas-fired boiler I used
to help operate at work was never really clean,
because first time it was fired after cleaning, the
tubes would become dirty again.
Al Messer
--- "Peter J. Cathcart" <peter.cathcart@xxxxxxxxxxxxx>
wrote:
> Barrie
>
> I'm sure conventional wisdom says leave well alone.
> The depth is pretty
> minimal but the potential damage pretty catastrophic
> if you get it wrong.
> If you look in the tubes on any operational loco you
> will see very similar.
> This is certainly true at our club. Treat it like
> paint - it protects the
> surface of the flues when cleaning conventionally.
>
> Peter Cathcart
>
> ----- Original Message -----
> From: "Barrie Purslow" <bpduo@xxxxxxxxxxxxx>
> To: "Model Engineering List"
> <modeleng@xxxxxxxxxxxxx>
> Sent: Monday, September 12, 2005 12:20 PM
> Subject: [modeleng] Boiler blues
>
>
> I am restoring a 5" Duchess the boiler of which is
> in generally good
> condition. However the flue tubes, which are about
> 15/16 ins. I.D., are
> coated internally with a layer of hard, black
> carbon. I have given it the
> usual flue brush treatment which produced clouds of
> black dust but a hard
> layer about 1/64 ins. thick remains.
> I have tried fitting the flue brush into an electric
> drill and giving the
> tubes a few minutes of rotary action to little
> effect. I am wary about
> trying anything more aggressive as I have heard
> quotes of over £2000 for a
> replacement boiler.
> Any ideas anyone?
> Barrie Purslow
> Warrington UK
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